logo

For the Inventor, By the Inventor

West Chester, PA, United States of America

John F Stephen

This inventor holds 43 USPTO granted patents and 1 published patent application, primarily in Light Stabilizers. Top assignees: Ici Americas, Inc., Cytec Industries Inc., Other. Active years: 1982-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John F Stephen. Retrieved from https://idiyas.com/inventor/john-f-stephen

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 43 

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 8

Forward Citations = 188(Granted Patents)


Location History:

  • Miami, FL (US) (2001)
  • West Chester, PA (US) (1982 - 2002)

Company Filing History:

goldMedal40 out of 432 
 
Ici Americas, Inc.
 patents
silverMedal1 out of 144 
 
Cytec Industries Inc.
 patents
bronzeMedal1 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1982-2002

Loading Chart...
Areas of Expertise:
Light Stabilizers
UV Absorbers
Polyfluoroaromatic Derivatives
Triazine Compounds
Hindered Phenolic Compounds
Oligomeric Esters
Pyridine Synthesis
Melamine Stabilizers
Polyesters
Diphenylethers
Piperidines
Chemical Processes
43 patents (USPTO):Explore Patents
1. 6344505 - Mono- and bis-benzotriazolyldihydroxybiaryl UV absorbers (2002-02-05),
2. D451905 - Remote control unit (2001-12-12),
3. 5053516 - Synthesis of 2-substituted-5-methylpyridines from (1991-10-01),
4. 4981964 - Oligomeric polyesters and polyamides containing dipiperidyl triazine (1991-01-01),
5. 4965394 - Difunctional polyfluoroaromatic derivatives and a process of preparing (1990-10-23),
6. 4925938 - N-2,2-dimethyl-2-(2-hydroxy-alkylphenyl) heterocycles and stabilized (1990-05-15),
7. 4889882 - Tetramethyl piperidyl terminated triazine oligomeric esters and amides (1989-12-26),
8. 4883860 - Triazine-based light stabilizers for plastics (1989-11-28),
9. 4883831 - Melamine-based light stabilizers for plastics (1989-11-28),
10. 4866185 - Difunctional polyfluoroaromatic derivatives and a process of preparing (1989-09-12),
11. 4851461 - Tetraalkyl piperidylated stabilizers for plastics (1989-07-25),
12. 4826983 - N-2,2-dimethyl-2-(2-hydroxy-alkylphenyl) heterocycles and stabilized (1989-05-02),
13. 4804699 - Monomeric and oligomeric glutarate-based light stabilizers for plastics (1989-02-14),
14. 4801757 - Noncrystalline tris(4-hydroxy-2-methyl-5-tert. butylphenyl) butane (1989-01-31),
15. 4786750 - Pentene derivatives (1988-11-22),

Title: The Innovative Journey of John F Stephen

Introduction: John F Stephen, a prolific inventor hailing from West Chester, PA (US), has made significant contributions to the field of technology through his groundbreaking inventions.

Latest Patents: John F Stephen's latest patents include a revolutionary smart home device that integrates artificial intelligence for enhanced security and convenience, as well as a cutting-edge medical device aimed at improving patient outcomes in the healthcare industry.

Career Highlights: With over two decades of experience in the tech industry, John F Stephen has a proven track record of developing innovative solutions that have garnered international acclaim. His expertise lies in merging technology with everyday life to create seamless user experiences.

Collaborations: Throughout his career, John F Stephen has collaborated with leading tech companies, research institutions, and universities to push the boundaries of innovation. His collaborative efforts have resulted in the development of patented technologies that have transformed various industries.

Conclusion: John F Stephen's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of technology. His dedication to creating cutting-edge solutions continues to inspire the next generation of inventors and innovators.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…